Air-valve.



Patented Dec. 25, |900. T. WHEAT-LEY.

AIR VALVE.

(Application filed Apr. 21, 1899.)

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' section without the float, showing the valve UNITED STATES THOMAS VHEATLEY, OF

PATENT OFFICE.

SYRAOUSE, NEW YORK.

AIR-VALVE.

SPECIFICATION forming part of Letters Patent No. 664,699. dated December 25, 1900.

Application tiled April 21, 1899 Serial No. 713.868- (No model.)

To [tti whom t nfl/Cty concern:

Be it known that I, THOMAS WHEATLEY, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvementsin AirValves, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to automatic air-valves for radiators and other steam-chambers; and it consists in a particular form of valve adapted to close the opening in any position of the valve and in certain details of construction relating to the alinement of the expansion rod and iioat, the drawing oft of the water of condensation, &c.

My invention will be better understood by reference to the accompanying drawings, in which the same numerals of reference indicate the same parts in all the figures.

Figure I is a vertical section of my improved air-valve. Fig. II is a corresponding closed. Fig. III is an enlarged section ofthe upper end of the preceding, indicatingthe variation in the position of the valve. Fig. IV is aside elevation of the valve and float. Fig. V is a top plan view of the base.

In the figures, 1 indicates the base, having a screw-threaded tip 2 for attachment to the radiator, provided with inlet 3, communicating with the interior of the base at its lowest point, so that the water of condensation will flow back easily into the radiator and not accumulate in the interior of the air-valve.

4 is an integral circular guide-wall in the center of the base, in which iits the lower end of the expansion-rod, 5 being a perforation formed at the bottom of said wall adjacent to the inlet, and also for the return of the water of condensation.

6 is the inclined outer surface of the base, and 7 au interior screw-thread in its upper edge for the attachment of the shell 8, having at its upper end the intern ally-screw-th readed neck 10 and enlarged under tip 11, adapted to receive the packing, 12 being the screw or tube fitted to said tip and screw-threaded to engage with the neck formed with outlet 18 and preferably with an inverted-cup-shaped valve-seat 14, 15 being a slot in its upper end for the screw-driver, and 16 the packing.

The float formed to iit the valve-seat snugly in any pof sition which the parts may assume and close the opening tight. While this may seem a slight variation in form, yet it is a great practical improvement, fltting the valve-seat of any form and closing the outlet in any position. All valves of this kind have heretofore been -provided with pointed or conical tips, which failed to close the outlet unless in perfect alinement and often scratched the metal, causing a permanent leak. It is evident that this semishericallytipped valve may be used in various constructions, but is particularly important in connection with a iioat, which is liable to slip to one side and tip. In my detail construction of float-valve perfect alinementis preserved when the parts are in normal position, and even when the tube 12 is removed the slipping of the float on the rod is prevented and all possibility of their tipping over away from the opening, making the readjustment of the parts diicult.

It will be noted that the lower stem or guiderod of the valve is seated loosely in the socket in the expansible rod, which allows the valve a slight lateral movement relative to said rod,A permitting the valve to be guided to its seat to close the outlet, and-.when the oat is employed to be guided independent of the eX- pansible rod. y

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is*

l. In an air-valve,'the combination of a valve-seat, approximately cup shape, a semispherical valve cooperating therewith, and an eXpan sible rod adapted to close the valve, said valve having a slight lateral movement relative to the expansible rod.

2. In an air-valve the combination of a valve-seat, approximately cup shape, a semispherical valve cooperating therewith, an eX- IOO pansible rod adapted to close the valve, said valve having a.y slight lateral movement rela\ tive to the expansible rod, and a float rigidly secured to the valve and adapted to move the same independent of said expansible rod.

3. In an air-valve, the combination of an inverted-eup-shaped val ve-seat,a semispherieal valve cooperating therewith, and an expansible rod adapted to close the valve, said valve 'being loosely and removably seated in the exverted-eup-shaped valVe-seat,a semispherieal valve cooperatingl therewith, and an expansible rod having its lower end guided against lateral movement, said valve being loosely Y Y seated in and guided by the expansible rod. "1 6. In an air-valve, the combination of an in- 'Y Y verted-eup-shaped valve-seat,asemispherieal valve eoperating therewith, an ezcpansible'3oV f rod having its lower end guided against lat-V l eral movement, said valvebeing loosely seated in and guided by the eXpansible rod, and Y a ioat rigidly secured to the valveand adaptn ed to move the same independent'of saidV expansible rod. 7. .In an air-valve, the combination of a J valve-seat', a valve coperating therewith, an expansible rod having its lower end Aguided .i against lateral movement, said valve being 4o' loosely seated in and guided by the eXpansible rod, and a iioat rigidly securedV to the valve and adapted to move theV same inde pendent of said expansible rod. e Y In testimony whereof I have hereunto 4g L signed my name. l V' THOMAS WHEATLEY.

Witnesses:

ALFRED WILKINSON, H. M. SEAMANS. 

